Sewing machine



Nov. 1 7, 1942. N. D. MARTINEZ 2,302,454

SEWING MACHINE Filed July 10, 1940 I 9 ShGStS-ShBOt l I /L U 0 27 0 o J 1, w H -ba l i ii) fine/7245 0 \0 I 70 big Nov. 17, 1942. N. D. MARTINEZ SEWING" MACHINE Filed July 10, 1940 9 Sheets-Sheet 3 ig/vagg P W4? bb 52 go 39 Nov. 17,1942. i N. D. MARTINEZ 2,302,454

SEWING MACHINE Filed July 10, 1940 9 Sheets-Sheet 6 Nov. 17, 1942. N. D. MAIIQTINEZ SEWING MACHINE Filed July 10. 1940 9 Sheets-Sheet '7 Nov. 17', 1942. N. D. MARTINEZ 2,302,454

SEWING MACHINE Filed July 10, 1940 I 9 Sheets-$11661, 8

Nov. 17, 1942. MARTlNEz 2,302,454

SEWING MACHINE Filed July 10, 1940 9 Sheets-Sheet 9 fag 25 a Patented Nov. 17, 1942 SEWING MACHINE Nivardo Donnay Martinez, Buenoa Alres, Argentina Application .Iuly 10, 1940, Serial No. 344,828 In Mexico April 12, 1940 4 Claims.

The present invention relates to a new type of machine for the. lateral sewing of the soles of jute and similar materials, and of the jute soles with toe piece and welt Jointly, with or without shoe mould, and it is an essential object of this invention, to provide a machine enabling the economical manufacture of shoes of the class known as jute and canvas shoes of any type and shape.

The invention embodies also other objects that will appear in the course of the following specification, considered in connection with the accompanying drawings.

In these drawings:

Figure 1 is a general view of the machine in front elevation and showing a part of the mechanism.

Figure 2 is a partial detail of the machine in section through a line 22 of Figure 1.

Figure 3 is a view of the plate for pressing the sewing, associated with the embodiment of Figure 2.

Figure 4 is an elevation of the element shown in Figure 3, showing the application of the guiding rollers for the displacement of the shoe mould.

Figure 5 is a section through the line 55 of Figure 1, showing other elements of the mechanism.

Figure 6 is a detail, in section, through the line 6-6 of Figure 1, showing other details of the mechanism.

Figure '7 is an elevation of the right side of the machine, partly in section.

Figure 8 is a section on the line 8-8 of Figure 1, showing other details of the mechanism.

Figure 9 is a section on the line 9-9 of Figure 1, showing other details of the mechanism.

Figure 10 is a vertical section on the line F-F of Figure 7.

Figure 11 is a detail section on the line H-ll of Figur 10.

Figure 12 is a detail horizontal section on the line I2I2 of Figure 10.

Figure 13 is a section on the line 13-43 of Figure 10, showing another detail of the mechanism.

Figure 14 is a sectional view of the machine on the line |4l4 of Figure 10.

Figure 15 is a section through the line l5--i5 of Figure 14.

Figure 16 is a general dew, in section of the left side of the machinef Figure 17 is a section on the line |'|--i'| of Figure 16.

Figures 18, 19, 20 and 21 are details of the mechanism forming the machine.

Figure 22 is a view in side elevation of the pressing means. t

Figure 23 is a partial plan of the drivingdevice for the pressing means.

Figure 24 is a partial section on the line 24-24 of Figure 23.

Figure 25 is another partial section on the line 25-25 of Figure 23.

Figure '26 is a plan view of the upper frame of the pressing arrangement.

Figure 2'7 is a front elevation view of the pressing arrangement.

Figure 28 is a diagrammatic side elevation and section through the line 28-28 of the Figure 23, showing the general assembly of the pressing means.

Figure 29 is a fragmentary detail of part of the elements forming the pressing arrangement.

Figures 30 and 31 are other fragmentary details of part of the elements forming the pressing arrangement, in different positions.

Figure 32 is a partial plan view of the machine, showing the automatic driving means for stopping the needle out of contact with the sole or the like.

Figure 33 is a partial view of the machine, in side elevation, showing the embodiment shown in Figure 32.

Figure 34 is a partial view, taken from the rear of Figure 32.

Figure 35 is a fragmentary section, in lengthwise section. of parts shown in Figure 32.

Figure 36 is a section on the line 38-36 of Figure 35.

Figure 3'1 is a section on the line 31-41 of said Figure 35.

Figure 38 corresponds with Figure 37, with the movable elements that form same, in different position.

Figure 39 is a schematic view, in perspective, of the brake elements showing their operation more clearly.

Figures 39a, 40, 41 and 42 have been added to illustrate the work of the machine on the independent sewing of the soles of jute, hemp or similar material, or in the sewing of the soles with toe piece and welt jointly.

Figure 39a is a perspective of the sole of jute and similar material, before sewing, having the said material marked 11.

Figure 40 is a perspective of the sole illustrated in the former figure, after having been compressed and sewed withv thread 2 which go all through the sole.

Figure 41 is a perspective view, before sewing of the addition of the sole to the toe piece It and the welt w which will constitute the canvas shoe.

Figure 42 is a view of the finished canvas shoes obtained after the embodiment illustrated in the former figure, has been compressed and sewed to the lateral sewing by means of thread q.

The machine according to the present invention, is made up as follows: A supporting frame I, from the upper plan 2 of which projects, at its front side, a partition 3, on which at its rear side, are provided the driving elements for the needle and punch, and in proper working relation the rotative punch, as well as the driving means for the shuttle. All these elements are synchronized with the mechanism that drives the pressing elements and with the elements for braking the needle, that will be all described in numerical order and separately, for the purpose of giving a clear disclosure of the machine. For convenience the description will commence with the means that drive the needle, comprising its punch and the turning punch, which carry a rocking element 4 (Figure 10) mounted for free pivotal movement by one of its ends on a support 5, that is secured to the partition 3, by means of a shaft or pivot 6. The rocking element 4 is connected at its other end with free pivotal movement to the lower, fork shaped end, of a cam arm I, which is connected at its other end to a sliding member 8, mounted for freely sliding between lateral guides 9 (Figures 1-5 and 10) which have their lateral sides, dovetail shaped; the said guide members being fixed to the partition. The sliding member forms the carrying element for the needle I l and the punch l2, to which pieces is transmitted the rectilineal vertical alternative movement of the sliding member, and the said elements H--l2 are connected to the lower end of the sliding member 8, through a support l3, detachably secured to the lower side of the sliding member 8.

The rocking member 4 is provided with a grooved portion, at the middle point I4 (Figures 10-11 and 32) in which is pivoted a lever l5, connected at its lower end with the upper edge of a cam member l6, which has two straight parts that form an angle with sides l'li8 (Figures 10 and 34), for the purposes that will be described with more detail in the following para- 'graphs and, at the point of connection between the elements I5 and 16, there is connected a second lever l9, which, at its lower end, is connected to one end of a rocking member formed by two parallel rods 28 (Figures 11-35) which, by means of a pin 2|, common to both rods, are pivotally connected either to the lower part of partition 3 as shown in Fig. 33, or directly to a support 23, at the end of which is connected for free rotative movement, the shaft 24, that is connected to the eccentric 16. The rocking member formed by the rods 20, is connected at its opposite end to the upper end of a cam member 25, that constitutes the driving means for the lower sliding member 26. The member 26 is mounted for free sliding movement in lateral grooves, dovetail shaped, between guides 21, fixed to the edges of a recess 28, made in the lower part of partition 3 (Figures 1-6). During rotation of the cam member Hi, the sliding members 8 and 26 are actuated and moved in opposite directions. That is to say, they alternately approach and move away from one another. The elements 4, I, ll, l8, I8, 28 and '25, constitute the driving means, for the vertical rectilineal and alternative movement of the sliding members 8 and 26.

The sliding member 28, carries a rotatable punch 29 at its upper end, guided by a support 38 (Figures 1-6) made solid with the sliding member, and in this support there is mounted with a free rotative movement within a bush 3|, a shaft 32, (Figures 1-7) at the end of which the rotatable punch 29 is detachably connected. The shaft 32 is mounted in a supporting member, and adjacent to said member 33, the shaft 32 carries a driving pulley 34. The supporting member 33 forms an integral part with the lower portion of the sliding member 26, in which portion is provided a lengthwise hole 35 (Figure 7) for slidably receiving a supporting stem and guide 36, for permitting rectilineal alternative movement of the sliding member 28. The said stem 38 is fixed at its lower end, through adequate fixing means, to a supporting member 31, that projects from the lateral inner side of a cross bar 33, between the front legs of frame I.

{it the lower end of the sliding member 28, there is fixed a pin 39 (Figures '7 and 10) to which is connected the lower end of a coil spring 48 which, at its other end, is connected to a hook member or the like 4|, fixed to a cross bar 42, of frame i. The said spring 48 constitutes a compensation member for the rectilineal alternative displacement of the sliding member 26.

The eccentric member I6 is connected through shaft 24, to a gear wheel 43 (Figures 1--1016 -3235 and 36) that meshes with a pinion 44, driven by a second gear wheel 45 by means of coupling between the said elements 44-45 to a common shaft 46, and the gear wheel 45 meshes, in itsturn, with a driving pinion 41, connected to a driving shaft 48, passing through supporting and guiding bearings 49 and 50 (Figures 1 and 16), The first of these hearings is fixed to the inner part of the front side of the frame, and the second, to an intermediate supporting plate 5|, fixed between the lateral sides of frame I, towards the upper end of same and adjacent to its rear side, from which point shaft 48 projects to the exterior, carrying, fixed to its end, a driving pulley 52, on which operates a flexible transmission element 53 connected and operated by a suitable source of power.

The transporting means for the shoe comprise a rack member 54 (Figures 2 and 12) which is driven by an angle lever formed by arms 55-58 (Figures 10 and 14) pivotally secured to the support 23. The arm 56 carries a roller 51 (Figure 10) in contact with the surface of the eccentric member l6, which through its cam-like portion I'II8 transmits to said lever member, the rocking alternative movement from right to left, and contrary, the said movement, being transmitted, through an additional arm 58 (Figures 12, 14 and 15) to the rack member.

The additional arm 58 is connected to the lever member arms 55--56, and swung thereby on a shaft 59, that projects from the partition 3 (Figure 14). The said arm 58 (Figures 12, 14 and 15) is provided with a forked end, in which enters, freely, a finger 60 (Figures 12, 14 and 15) from which projects a stem 6|, connected, towards the end of the rack member. The eccentric member I 6 constitutes the means that serve for transmitting the rocking movement to both arms 5556 that, in its turn, transmit that motion'to arm 68 and this to the rack member 84, in cycles of horizonal alternative movement, of a length equivalent to the distance between stitches, being the' advance movement effected as a result of the operation on the roller 61 (Figure by the edge I1, of the eccentric member I8. During return movement of the arms 85-88 the roller 81 rolls along the edge I8 under the influence of a coil spring 62 (Figures 10, 12 and which, at one end, is secured to a knob 83 on the rack member 64, and at the other end is held by a pin (Figures 10, 12 and'15) that projects from the lateral side of partition 3, where same strikes against theknob 83.

In the front side of partition 3, and over the groove 85 that constitutes the guiding means for the movement of the shoe mould '66 (Figures 7 and 12) there is provided the plate 81, in the form shown more particularly in Figures 1-7 which, on its face normally directed to the rack member 54, is provided with a plurality of rollers 88, mounted between supporting elements 88.

fixed at the upper and lower ends of said plate (Figure 4). The plate 61, by means of the antifriction rollers 68, forms a pressing and gu ding member for the shoe mould of the standard type, shown in Figure 12, and the same is fixed between the edges of the groove '65, with the aid of fixing plates 18, fixed to partition 8 by means of pins 13 (Figures 19) provided with knobs 12, which are clearly seen in Figure 9, the said pins 13 being counter operated by a respective expanding spring 1| (Figure 9) which works as a safety means.

With reference to the means feeding the thread at the final cycle of the sewing of each sole, these comprise a rod 14 (Figure 10) that is fixed by one of its ends 15 through a pin and slot connection 82-83, to a guiding rod 16, pivotally connected at one end through a pin 11 with partition 3 and at the other end the lower one, the said rod 16 is connected to a sliding member 18, mounted at the back of partition 3 between members 18 (Figures 10-13). The connection between the rod 16 and the sliding member 18 is established by a pin and slot connection 888I. One end of a spring 85 is secured to the end 15 of the rod 14, which at its other end is fixed to a member 86, fixed to a rib 81, formed at the rear of partition-3 (Figure 10).

The rod 14 is adjustably connected to a support 88 (Figure 10) coupled with the arm 55, through an extending member fixed in a determined position. with the aid of any fixing means, a pin or the like, that is inserted within one of the sides of said arm 55.

The sliding member 18 is provided with a hook 88 (Figures 1012) that works within a rectangular recess 88, made in the end zone of the rack member, opposite to that of the knob or step 63 for the purpose of connecting with the pawl 8| of the shoe mould 66 (Figure 12), for driving same with a rapid lineal movement at the end of the sewing cycle, providing a determined quantity of thread, for the final cycle of manufacture of the shoe, which cycle consists in sewing the ends of the thread that are left by the usual machines of heel and toe, regulating the length of free thread with the more or less extension of penetration of the rod 14 within the support 88.

thread to be delivered to the needle II, these comprise (Figure 1) a rod 82 connected to the partition 8, in inclined position. This rod Is provided at its upper end with an eye 88, through which passes the thread 84. coming from a feeding bobbin 88, placed, with the aid of a support 88, at any point, which plan may be, eventually the floor, as indicated by the earth line T-T of Figure 1.

The thread 84, after leaving the eye 88 of the rod 82, is inserted. freely, between the tension regulating means constituted by some discs 81 (Figure 8), connected to a support 88, from which projects a pin 88.

The pin 88 is provided with a perforation I88, at its end adjacent to the support 88, and at a point. between the discs 81. Through this perforation is inserted the thread 84 and both discs 81 are retained one against the other by means of a spring I8I (Figure 8) which, at its opposite end is engaged by knob I82.

The sewing thread 84, that passes through the perforation I88, in the pin 88, projects to an eye I88 (Figure 1), formed at the upper end of a rod I84, fixed, in partition 3, with the aid of any adequate retaining means. a pin or the like.

From the eye I83, the sewing thread is projected to a second group of complementary tension regulating means. A cone shaped member I85 (Figures l9) is provided with a hole at I86, formed towards the rear end of part I81 of said member I85. A back member I88 is connected concentrically by means of a shaft or pin I88 to partition 3, having provided between partition 3 and the extended rear end I88, a spring II8, mounted axially on the pin I88, upon which pin the member I88 is threaded, which is kept in position by the permanent tension of said spring H8.

The member I85 is connected to the upper end of the plate member 18 (Figure 1) by means of a threaded stem III (Figure 9) that ends in a handling knob H2 and passing from perforation I86, the thread is projected to pass the eye provided at the upper and H3 of a guiding rod II4, fixed at the upper end of plate 18, and from its eye II3 the thread projects for penetrating within a guiding member II5 (Figure 1) that contacts with the turning surface of a pulley II8, mounted for free rotation at the end of an angular lever I I1 pivotally connected at II8 to an extension I28 of an arm lever I2I that is, at its turn, pivoted to the sliding member 8 by means of a pin I22. The arm I2I is provided with a pin I25 mounted for freely sliding in an angular groove I23, of a retaining and guiding plate I24 (Figure l). The plate is fixed at the front side of the partition 3 and adjacent to the sliding member 8.

The arm II8, of the lever II1--II8, is connected to the extension of the lever I28, by means of a spring I26 (Figure 1) of regulable tension, depending on the point of attachment of its ends in any of the eyes I21 of the arm H8 or I28 of the arm I28.

Reverting to the driving means for the needle and punches, to the driving shaft 48 is fixed a complementary pulley I 28, between the bearing 58 and the rear of thesupport or frame I, (Figures '7 and 16) over which pulley runs, a flexi- With reference to the feeding and guiding means, for the sewing thread and the correble transmission belt I38 which, passes between a pair of lateral pulleys of smaller diameter I81, mounted for free turning on individual supporting and guiding shafts, provided on supporting members I32, fixed below the cross bar 5|. The belt I38 also passes over a pulley 34, mounted on shaft 32, for transmitting to same the rotative movement, simultaneously with its lineal rectilineal alternative displacement, jointly with the sliding members 8 and 26, as well as jointly with the intermittent displacement forward and backward, of the rack member 54, in a length equivalent to the distance between stitch and stitch, distance that is determined by the distance existing between the teeth with which meshes the pawl 9I of the mould 66 carrying the shoe (Figure 12) which is advanced, at intermittent cycles, by the meshing with the teeth of the said rack member until reaching the final tooth at this moment the stop 89 becomes operative, for transmitting to the pawl 9I and mould 66 the lineal quick movement of final advance, for leaving free a certain length of thread destined for the final operation of shoe manufacture in the usual machines of toe and heel.

Referring to the driving means for the shuttle of the common type, formed by the body I33 (Figures 10, 16, 1'1, 18 and 19) these comprise a transporting train formed by back and front toothed wheels I34I35 with the addition of a third wheel I36 (Figures, 16-16) which is coupled in regulable position to a support member formed by a rod I31, adjustably secured in the frame I, by means of fixing elements constituted by pins and nuts, and having interposed between said rod and the frame, a supporting bush I38 (Figure The wheels I34, I35 and I36, are connected to each other by a chain I39, in which and between two of its links, there is provided a pushing element I46 (Figure 16) disposed in cooperative relation with a complementary pushing stop I4I, attached to the lower base of the shuttle I33 which, by means of longitudinal ribs I42 (Figure 19) is maintained over two rails I43, that constitute the guiding means for the lineal rectilineal alternative movement of the shuttle between said rails. The toothed wheels I34I35 turn in the free space provided between the opposite disposed edges of said rails, that are fixed to a supporting platform I44 (Figure 19) fixed to the upper part 2 of the frame I.

Connection between the lower wheel I36 and the rod I31, is made by means of shaft I46, on which is mounted an intermediate bearing I45 (Figure 10). Said bearing I45, freely inserted in a longitudinal recess I41, is adjustably secured therein by the use of fixing means such as a safety nut or other adequate means.

The rod I31 is adjusted by a rod I 48, (Figures 10 and 16) connected, transversally, to a pin I49 that projects, normally, from one of the faces of the rod I31, the said rod I48 being fixed to said pin by means of retaining elements, such as nuts I56. The other end of the rod I48 is pivotally connected to a support member fixed to the cross bar 38, that is secured transversally to the frame I.

Referring to the driving means for the shuttle I38, they comprise a lever I52 (Figures 10, 16, 17 and 20) connected at its back end with free pivotal movement to a support member I53 that normally projects at one side of partition 3. The rod I52 is provided at its fore end, with a roller I 54 (Figures 17 and 20) connected to same for free rotation on a shaft I55. The said roller constitutes the driving member for the shuttle. The said lever I52 comprises, at its end adjacent to the roller I54, 3. block of flexible material I56, fixed to same by means of a convenient fixing element, and the object of said block is to cushion the impact of the lever against partition 3. Towards its back end, the said lever carries, in association therewith, either by direct coupling or with the use of an intermediate eye, a spring I51 (Figures 10-1'1) connected by'its opposite end to the lower face of a plate I33, that normally projects from the partition 3, the said spring I51, constituting an operating means for the pulling lever I52 for the purpose that same, through a violent impact will return to the initial position the shuttle I33.

The wheel I34, forming a part of the transporting train for the shuttle I33, forms itself the driving means of the said train, and for that purpose, the shaft I56 of said wheel (Figure 17) is provided at the end with a pinion I36, that meshes with a similar pinion I6I connected in shaft 46, that forms the driving means of the transporting train, by way of its connection with the toothed member 44, which in its turn constitutes the driving means of the toothed wheel 43 that drives the eccentric I6. The shaft I68 is mounted in a bearing I62.

Referring now to the mechanism driving the shuttle, this is formed (Figures 16 and 17) with the provision at the fore end of the rails I43, of a metallic fence or cover, fixed at the end of said rails, and curved as at I64, corresponding to the sharpened end I33a (Figure 1'1) of the shuttle I 33 and at the inner side of said fence at the curve shaped part I64, there is applied a lining of leather or similar material I85, that reduces the shuttle impacts.

The fixing of the fence I63 to the rails I43, is effected with the aid of a clamp I66 (Figure 1'1) provided between the front end of the side of the rails I 43 and the open end I61, that projects from the curve shaped member I64, of the fence I63. The fence constitutes the member that limits the shuttle race.

Referring to the pressing means, for the soles or the like, which form an integral part of the mechanism of the machine, these comprise (Figures 1, '7 and 22 to 31) a set of elements provided at the front side of the frame I, and against a resting frame I68, to which is secured a protecting armouring I69, for the driving elements of the pressing means, as it is shown more specially in Figures 1 to 7, that show more clearly the arrangement of the pressing embodiment, the description of which will be made on the basis of the Figures 22 to 31. Over the lateral sides I68a of frame I68 is applied the table I69a, to the lateral sides of which are conveniently secured small supports I16, on the upper part of which is pivoted, at the ends, a shaft IN, to which is connected a lid I12, of variable shape, either for pressing sole moulds only or soles with toe piece and welt mounted on the corresponding mould, the said lid being shown diagrammatically in the accompanying drawings.

On the table I69a and symmetrically disposed in front, within respective cavities I13 and I14 (Figure 24) move the pressing members I15 and I16 (Figures 24-27) provided between sliding guides I11. These pressing members are provided with projections I18 and I19 (Figure 24) through which pass respective screws I86 and I8I (Figure 26) intended to be applied to angular plates I62 and I83, respectively, the edges of which press the running part of the mould, where the jute sole or canvas shoe is placed. The said screws I86 and I8I permit an exact adjust ment for the approachment of plates I82 and I83, against the moving pressing elements of the mould.

The central part of the table I99a, carries a cavity I84 (Figure 24) in which is placed themould which, for its insertion therein, is conveniently guided between lateral corresponding This shaft 49 is provided with'a worm I98,

that meshes with a wormwheel I89, rotating continuously. Connection is established between said wheel and the shaft I81, in the form that will be explained in the following corresponding part of this specification.

On shaft I81 there areprovided two eccentric members I90 and I9I (Figure 24), over which rest corresponding rollers I92 and I93, the first named of the .rollers being mounted on an arm I94, pivoted at I95, the said arm being firmly united to another similar one I99, that carries at its inner end I91, pivoted, a third small arm I98, also pivoted at I99 to the ear 200, that is integral with the pressing element I15. Also the running pressing member I19 is connected in a similar manner through arm 20I, coupled on a shaft 202, the said arm being rigidly united to a similar one 203, atthe end 204 of which is connected a small arm 205, pivoted at 205, to the ear 201 of the running pressing element I19. The said arms I98 and 203 are double and are provided in pairs on respective bushes 208 and 209, coupled to the shafts I95 and 202 on the shaft I81, towards its ends, at both sides, there is provided an eccentric sector 2I0 (Figures 22 -and 23) on which works a small roller 2 (Figure 22) supported by an arm 2I2, pivoted at 2I3, the said arm forming an integral part of a hook 2I4, intended to contact on a roller 2I5,-connected to the lid I12, when this is in the position closed against the mould, the said hook having for its object, to maintain the lid in said position, because same tends to stand always in the raised position owing to the elastic action of spring 2I9, placed axially on the shaft "I (Figure 27) on said lid.

The connection between the toothed wheel I89, and the shaft I81, is effected through the key 2" (Figures 23, 30 and 31) half round shaped,

provided at the end with a stop 2I9, that projects at a right angle. Said key 2" is given a rotary angular movement when the stop 2I8 is operated to clutch and unclutch the wheel I89. Stop 2I8 works freely within a cavity 2I9 (Figure 29) provided in a bush 220, and tends always to remain in the position shown in Figure 31, by the action of a spring 22I, fixed by one end to said stop and by the other end to a retaining member 222, that projects from the bush 220. As can be seen in Figure 31, the key, for the purpose of transmitting the motion, falls into grooves 223, provided in the worm wheel I89, on the contrary, when the key occupies the posistitutes the projecting end of an arm 22!. that forms an integral part with a sliding member 229, conveniently miided, and from the end of which normally projects an arm 221, that constitutes another element for the retention of stop 2" of the key. 226 is pivoted to a. rod 228, which in its turn, is pivoted to the end of an am 229, pivoted at 230, over any fixed element, of the machine, and the said arm is rigidly connected to a second arm 23I pivotally connected with the end of a driving rod 232, that projects from a treadle 234 rocking on a support 235, fixed to the floor. The lid I12, in its turn carries pivoted at 239 a link 231 (Figures 22 and 28) pivoted to the upper end of a lever arm 238, pivotally connected at 239, and from this connecting point projects, normally, the additional arm 240, at the end of which is pivotally connected at 2 a link 242, to the other end of which is 'connected the upper end of a. lever 243, pivoted medially at 244.

At the lower end of the lever 243 there is pivotally connected, a link 249 pivoted at the end 249, to a sliding rod 241, suitably guided in elements not shown. This rod constitutes a supporting means for a piece 248, acting as complementary retaining means for the stop 2I8, for causing the rotation or the unclutching key of the driving mechanism for the pressing means, as hereinafter described.

The operation of the pressing mechanism is as follows: When motion is imparted to the shaft I as, such motion is transmitted by said shaft tion shown in Figure 30, the worm wheel I89 can run freely over the shaft and the key without rotating same therewith.

For the purpose of retaining the key in the position shown in the said Figures 28 and 30, it is necessary to provide a stop that will, in its turn, engage and swing the stop member 2I8 of the key, and to that eifect a retaining element 224 is provided (Figure 28). This element conthrough worm I88, to the worm wheel I 89, that turns freely on the shaft I81, because the key 2 I 1, is in the position shown in the Figures 28-30. Also, at the initiation of the operation, the lid I12, is in the open position (Figure 28 full lines). As it has already been said, the operation for pressing the mould is eif'ected in two steps. The first one is intended to reduce the width of the sole texture, to such extent, that it will become suitable for applying to the mould, and the second, for finishing up the pressure on the shoe mould. The position of the elements is at the initial cycle of the operation, that shown in Figure 28. When the mould is inserted into the cavity I84, of 'the table I 990, the movable elements are disposed in the position indicated as 249 in Figures 24'and 26.

In the first instance, for the initial cycle of the operation, the workman will press the treadle 234 in the direction shown by the arrow F (Figure 28), forcing the rod 232 to descend as shown by the arrow F" turning, the arms 23I and 229, pushing element 228, and forcing the sliding element 229 to slide, and thus the arm 225 will be carried to the position indicated with dotted lines in Figure 28. The retaining element 224 will move, jointly with the same arm, to the position shown in said Figure 28, releasing the stop 2I8 of the key 2I1 which, by the action of the spring 22I will be carried to the position shown in Figure 31, in other words, will permit the clutching of the toothed wheel I 89 and of the shaft I81, because the key2I1 will introduce itself in any of the cavities 223 of the wheel I89. Under these conditions shaft I81 will be set in motion, driving bush 220, and also stop 2I8 which, when reaching the position a .of Figure 28, will strike the stop element 248, of the rod 241. This engagement will produce the turning of the key 2", again to the position shown in Figure 30, and will release the connection between the wheel I89 and shaft The said sliding member I81, so that the said shaft will stop and the wheel I89 will turn free.

During the rotation, the shaft I81 will have caused the rotation of the eccentrics I99 and I9I (Figure 24) which eccentrics will have moved to such an extent, that the peripheric surface of each, designed as b in Figure 24, will have made tangential contact with the rollers I92 and I93 respectively, and by this time the arms I96 and 203, will have moved pulling the sliding p essin means I15 and I16. This movement of the sliding pressing means, corresponds to the first step of the mould pressing, because the plates I82 and I83 will have pressed above the parts 249 of the mould, that contains the shoe, a pressing action that will be continued until the width of the sole is adequately reduced.

Once the mould has been inserted, it is necessary to continue the pressing, for obtaining-the total compression of the mould, and for this purpose, the lid 12, is manually lowered and applied over the mould that carries the shoe, as indicated with the arrow Fa of Figure 28, and at the closing of the said lid, the lid will pull therewith its pivot 236, to the position and the link 231 will occupy the position d; the lever formed by the arms 238 and 248 will rotate on the pivot 239, carrying its arm 240, to the position e and the rocking lever 243 to the position I (Figure 28) at which operation the rod 241 will be advanced, and the stop element 248 will occupy the position 9, separating itself from the stop 2 I8. Thus the stop 2 I 8 is released and by the action of the spring 22I, will tend as formerly, to turn so that the key 2I1, will be again introduced in the groove 223 of the wheel I89, for again connecting the said wheel with the shaft I81 and drive this shaft again.

The rotation of shaft I81 will, as already said, turn the bush 228 and stop 2I8 of the-key, and this will reach the position 7' of Figure 28, stopping at this position by the interposition into its path, of the arm 221 which, in the initial cycle, of the operation, had been carried to the position h of Figure 28. Thus the stop 2 I8, will return to occupy the position shown in Figure 30, releasing again the wheel I89 from shaft I81.

During the cycle of rotation of shaft I81, which corresponds to the passage of the key 2I1, from the position a to the position 9' and corresponds to the second step of compression, the eccentrics I90 and I9I will have turned to such an extent, that the highest points of their periphery, will contact with the rollers I92 and I93 respectively, thereby causing the arms I96 and 203, to move to their maximum points 1' and 10 (Figure 24) giving the maximum compression to the pressing elements I and I16.

At the same time, while the above operation takes place, and at the end of it the sectors 2I0 on the shaft I81, have commenced their operation.

The peripheric surface of the sectors 2I8, at

the moment this second step of the pressing operation, takes place have made a contact with the rollers 2II, advancing the hook 2I4, and causing same to engage the roller 2I5, of the lid I12, so that the hook will keep the lid pressed against the mould, during the final compression of same by the pressing elements I15 and I16. Once that sector 2I0, has passed out of contact, with roller 2, the'arm 2I2 and the hook 2I4 will fall by gravity, leaving the roller 2I5 and consequently the lid I12 which, by the action of the springs 2I6, will rise for occupying the position shown in Figures 27 and 28, carrying with it,

at this movement, the parts related to the retaining member 248, for placing same in its original position shown with full lines in Figure 28.

At this step of the operation, the lid I12 is in the raised position but the pressing members I15 and I16 are still pressing the mould, so that for withdrawing same, it will be necessary to withdraw the said pressing members. For this purpose it will be sufllcient, to press the treadle 234 in the direction of the arrow Fb (Figure 28) which action will return to the initial position rod 232, arms MI and 229 and rod 228, that is to say, sending back arm 221 from its position It jointly with arm 225 and stop 224, which will be moved to the position indicated with full lines in Figure 28. v

The arm 221, having been withdrawn, free passage will have been provided for stop 2 I8 that was stopped in position 7' (Figure 28) and which, by the action of the spring 22I, will turn the key 2I1, for introducing same again in any of the notches 223, of the wheel I88, and connect the said wheel with the shaft I81, The stop 2I8 rotates with the shaft I81 into engagement with the element 224 and is thereby turned to inoperative position thus completing the pressing operation. The rollers I92 and I93 will keep applied to the related eccentrics by the action of a spring 250, connected by its ends (Figures 23 and 24) between supports 25I, connected to the bushings 288 and 209, which spring also tends to separate the pressing elements I15 and The mould thus pressed, may be withdrawn and the pressing means prepared for a new pressing cycle, it being possible to effect the pressing operation of the mould in a single step, for which purpose it is only necessary to change the levers and the arms mechanism that drive the various retaining means, against stop 2I8, by other elements that will cause only two cycles of stopping to said stop, one in the position of the initial cycle of the operation, and the other in the position indicated as 1' (Figure 23),

As regards the means for braking the needle reference is had to same in Figures 7 and 16, and more particularly in Figures 32 to 39. The part 252, of the toothed wheel 43, is connected to shaft 46, by means of a key member 253 (Figures 35, 37 and 38) of half round cross section, that penetrates into a similarly shaped longitudinal cavity or slot 254, as shown in Figures 35-38 provided in the shaft 46. At the same time, the piece 252, of the said toothed wheel 45, is provided with a longitudinal slot 255, in which falls the key when turning (Figure 37). The said key 253 carries, on its end, an extension that normally projects in the shape of a stop 256, that moves within cavity 251, made within a bush 258, coupled toshaft 46, through a fixed key 259 (Figures 35-36). Stop 256 is, in normal working conditions, in the position shown in the Figures 32 and 36, and is held in that position by the pressure applied by the transmission of motion from the wheel 45 to the shaft 46 and the elastic action of a spring 260, that connects the end of the stop 256 with a pin 26I on the body of the bush 258. While stop 256 is in the position shown in Figure 37, as it will be gathered, the toothed wheel 45 carries the shaft 46 along with it, and when the said stop 256 is in the position shown in Figure 38, the key is completely withdrawn into the cavity 254 of the bush, and the toothed wheel 45 will freely rotate thereon. A handle 262 is connected by means of an pivotally connected at 265 to the table 2. of the frame I; the said lever member forms integral part with a crank arm 266, that ends in afork shaped part '261- (Figure 34) for the purposes that will be explained hereafter.

- The lever 264 is provided with a projection 268 (Figure 34) to which is pivoted at 269 a braking member formed by a plate 218, provided at its rear end with a handle 21!. The relative position of the braking member is determined by a spring 212 bound to same by one of its ends and by its other end to a guiding support 213, with the intervention of a roller 214, supported for rotation on the said guiding support 213. The roller 214 makes tangential contact on stop 215. that forms integral body with the braking member.

Over the toothed wheel 43 and at the same side with the braking member, there is applied a part 216 that presents a body normally projecting of the said wheel, providing a surface 211 that is, as will be seen, a lateral pushing member, for the purpose of producingv the angular rotation of the braking member, when the same must work. Normally, the pushing member 216 rotates with the toothed wheel 43, since the working element is out of its path.

The operations of the device is as follows: Considering that the machine is in operation, the various elements that form the braking mechanism will be in the position shown in Figures 32 and 33, and the machine continues its normal sewing operation, already specified through its needle II, by successive rectilineal alternative movement of same.

When it is required to stop the operation of the machine for any reason, the operator must operate handle 262 (Figure 32) carrying same to the dotted position in said Figure 32, in which,

position it will be held by action of a stop 218 (Figure 1) of a lever 218, that is pivotally connected towards the lower end of partition 3, adjacent to its lateral edge, it being possible to use any other fixing means suitable for the purpose When carrying the handle 262 to the position above explained, the am 263 and the lever 264 will have moved to the respective positions indicated with dotted lines in Figure 32, and the braking member will have been carried to the position s of Figure 32. In that position the braking member 218 will be engaged and shifted laterally by the rotating pushing member 216. At this moment, the surface 211, of the said pushing member 216, will make slight contact with the lateral surface 280 of the braking member, forcing same to the position t of Figure 32 and there, the step 28I, provided at the end of the braking member, will engage the stop 256 and turn the key 253 to the position indicated at u in Fig. 32. Thus the connection between the wheel 45 and the shaft 46 is broken and the motion of the shaft is arrested. As will be understood, the position of the pushing member 216 is so chosen with respectto the wheel 43 and connection between the latter and the slide 8, that the motion is stopped when the slide is in the upper position of its course.

the action of the spring 268. This will turn key 283 angularly, until reaching again the position shown in Figure 37, and as a consequence, the toothed wheel will again be connected to shaft 48, for continuing the transmission of the move- 'ment.

With the machine at rest, if it is desired to move the sliding member 8 that carries the ricedle Ii, this may be done by means of an emergency device, operated by hand, and which is formed bythe following combination of elements; A pinion 282, that can mesh with the toothed wheel 43, is mounted on a shaft 283, provided with a 'collar member 284 (Figures 32 and 33) fixed to same and constituting an abutment for an expansion spring 285 which; at its opposite end. rests against 'a support 286, that constitutes the guiding member for the lineal rectilineal alternative movement of the shaft 283 in cooperation with the pinion 282. The said spring constitutes an element that tends to maintain the pinion 282 out of the meshing position, with the toothed For restoring the braking mechanism to operawheel 43. Shaft 283 ends in a handle member 281, connected to said shaft by a crank arm 288.

For manually operating the driving mechanism of the needle II, it is sufficient to push the shaft 283, rearwardly to an extent to mesh the pinion 282. with the toothed wheel 43, thereafter turning the crank 288 through handle 281, the said elements transmitting the rotative motion to pinion 282 which, in its turn, transmits motion to the toothed wheel 43 prior to rotary movement of the wheel 43, the pushing member 216 thereon maintains the-braking member 218 in the po-' sition t, and the stop 256 in the position it of Figure 32, but when the toothed wheel 43, is rotated, the pushing member 216 will release the braking member 218 and this will be able to return to the position s under the influence of the spring 212 spring 260, thus turning the key 253.

In order to prevent the gear wheel 45 from being thus coupled with the shaft 46, the handle 21! is swung in the direction indicated by the arrow Fd (Figure 32) the said action causing the stepped end 28| to thrust the stop 256 to the position v of Figures 32-35, at the bottom of the recess 251 and sliding the key 253 longitudinally, the opposite end of which (Figure 35) pushes the ring 289 to the position x.

Stop 256 is confined in the position 1) (Figure 32) by the recess 251 and permits hand driving to be accomplished with the use of the crank handle 288, whenever it will be required and when the driving of the crank handle 288 is finished, same will return, to its initial position by the action of spring 285, and the pinion 282 will be put out of meshing with the wheel 43.

For returning the machine to its normal operative condition, handle 262 must be carried from the position shown with dotted lines in Figure 32, to the one shown in said figure, with full lines, and thus the forked end 281 of the arm 266 displaces the ring member 289 from position m (Figure 35) and carries same to the position shown with full lines in the said figure. The said ring member will press on the end of key 253, pushing same forward and withdrawing stop 256 from the recess 255, to an extent that will place same in condition for returning to its original position, by the action of the spring 268.

, Thus the machine is restored to condition for normal operation.

Having now particularly described and ascerrotate in the related slidable member, and means for imparting rotary movement to said rotatable punch.

2. In a machine for sewing shoe soles of jute and like material, a sole carrier movable stepwise and having a row of openings therethrough, a slidable member arranged above said carrier, a punch carried by said member, a needle arranged in spaced parallel relation to said punch and secured to said member, said punch and needle being movable with said member to penetrate said openings, a slidable member arranged below said carrier, a shaft rotatably mounted in the second slidable member, a punch rotatable with said shaft and movable with the second slidable member to penetrate said openings, means for simultaneously reciprocating said slidable members, and means for imparting rotary movement to said shaft and the related punch.

3. In a machine for sewing shoe soles of jute and. like material, a sole carrier movable stepwise and having a row of openings therethrough, slidable members arrangedabove and below said carrier, relatively displaced punches movable with the slidable members to penetrate said openings, a needle carried by one 0! said slidable members and displaced with respect to said punches, a crank pin, a lever connected medially with said crank and connected at one end to the upper slidable member, a fixed pivotal mounting for the other end of said lever, a second lever pivotally mounted intermediate its end, one end of the second lever being connected with the lower slidable member and the other end being connected with said crank pin.

4. In a machine for sewing shoe soles of jute and like material, a sole carrier movable stepwise and having a row of openings therethrough, a slidable member arranged above said carrier,

a punch carried by said member, a needle ar ranged in spaced parallel relation to said punch and secured to said member, said punch and needle being movable with said member to penetrate said openings, a slidable member arranged below said carrier, a shaft rotatably mounted in the second slidable member, a punch rotatable with said shaft and movable with the second slidable member to penetrate said openings, a pulley carried by said shaft, a flexible drive member engaging said pulley, and means for simultaneously reciprocating said slidable members.

NIVARDO DONNAY MARTINEZ. 

